I tend to make a photocopy for me, and then write the row number on the side of the row that I start from - so if the first row was a knit row, and that's number one, and I'm reading the chart from right to left, the little number (1) goes on the right side of the chart! Then, the purl rows or WS rows will get even numbers 2,4,6 and so on written on the lefthand side. As I go, I know that I'm always starting from the numbered side of the chart.